@Fnitrox maybe working in the distribution instead of the specular itself? Didn't made any research but I assume the lichens would grow in places where there is moisture, and it is more probably to accumulate water between the rocks than in the rocks themselves like you have in there now. Maybe making the lichens grow from…
Crosspost from my wip-thread (all the cool kids are doing it) http://www.polycount.com/forum/showthread.php?t=107190 Working on some modular rock in UDK:
Working on this yesterday and this afternoon. Stumped on how to do the burlap and would love any suggestions on a possible workflow. Inspired by this radio from the Rock and Roll Hall of Fame:
Trying to get on an art workshop, need to show them a static mesh+textures. Work in progress so far. Not liking he rocks at the sides, might redo them.
This is nothing compared to all the awesome stuff posted here but anyway... Some new rocks I'm working on. It's missing some stuff so I'll go back to the hi-poly and fix it.